Ludacris has announced that he is the "best rapper" alive, which is why his last album was called 'Undisputed'.
He told the Chicago Tribune: "Rap is real competitive just the same way boxing is. We always talk about taking other rappers out. That being said, I feel like I'm the best rapper. I wanted to get the best boxer in the game for my last album. That's why it's called 'Undisputed'".